Application: gvSIG desktop

#include <jni.h>

#include "org_gvsig_addo_Jaddo.h"

#include "gdal.h"

#include "cpl_string.h"

jobject *jni_obj;

JNIEnv *jni_env;

int incrementFnc( double dfComplete, const char *pszMessage, void * pProgressArg ) {

        jclass class_incr;

        jmethodID method;

        int value = 0;

        value = (int)(dfComplete * 100);

        class_incr = (*jni_env)->FindClass (jni_env, "org/gvsig/addo/IOverviewIncrement");

        method = (*jni_env)->GetMethodID(jni_env, class_incr, "setPercent", "(I)V");

        (*jni_env)->CallVoidMethod(jni_env, (*jni_obj), method, value);

  return 1;           

}

JNIEXPORT jint JNICALL Java_org_gvsig_addo_Jaddo_buildOverviewsNative

  (JNIEnv *env, jobject obj, jint method, jstring file, jintArray values) {

          jni_obj = &obj;

          jni_env = env;

          int err = 0;

          jsize lon = 0;

          jint *listValues = NULL;

          GDALDatasetH *poDataset;

          int anLevels[1024];

          const char * pszResampling = "nearest";

        const char *filename = (*env)->GetStringUTFChars(env, file, 0);

        lon = (*env)->GetArrayLength(env, values); 

          listValues = (*env)->GetIntArrayElements(env, values, 0);

          int i = 0;

          for (i = 0; i < lon; i++) {

                anLevels[i] = listValues[i];

        }

          switch(method) {

                  case 0: pszResampling = "nearest"; break;

                  case 1: pszResampling = "average"; break;

                  case 2: pszResampling = "average_mp"; break;

                  case 3: pszResampling = "average_magphase"; break;

                  case 4: pszResampling = "mode"; break;

          }

          GDALAllRegister();        

    poDataset = GDALOpen( filename, GA_Update );

    if( poDataset == NULL )

        poDataset = GDALOpen( filename, GA_ReadOnly );

    if( poDataset == NULL ) {

            (*env)->ReleaseIntArrayElements(env, values, listValues, 0);

            (*env)->ReleaseStringUTFChars(env, file, filename);

        return CE_Fatal;

    }

        err = GDALBuildOverviews( poDataset, pszResampling,

                            lon, anLevels, 0, NULL,

                            incrementFnc, NULL );

    if( err != CE_None ) {

                (*env)->ReleaseIntArrayElements(env, values, listValues, 0);

                (*env)->ReleaseStringUTFChars(env, file, filename);

        return err;

    }

        GDALClose(poDataset);

    GDALDestroyDriverManager();

    (*env)->ReleaseIntArrayElements(env, values, listValues, 0);

    (*env)->ReleaseStringUTFChars(env, file, filename);

    return -1;

}